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Quantum radio from American scientists will provide submarines with video communication

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Quantum radio from American scientists will provide submarines with video communication

12 January 2018

Specialists from the National Institute of Standards and Technology (NIST) have shown what quantum technologies in the field of telecommunications are capable of, and suggested using the so-called quantum radio in areas where the usual mobile communication or GPS is not available.

The team is working with quantum instruments in the range of ultra long waves (or very low frequencies) that easily envelop the Earth and are able to pass through water or buildings for longer distances than the familiar super high frequencies (SHF). The very low frequency (VLF) signals with a range of 3-30 kHz are used for communication on submarines, but their power is not enough to broadcast audio or video messages. In addition, today data transmission is possible at a maximum of 18 m.

Among all else, the quantum sensors magnetic fields sensitivity is higher, so the signal-receiving area can be extended. In addition, the width of the communication channel increases to the one of mobile connection reach. This means that the transmission of audio or video files will be possible even at water depths or in other terrain, where electromagnetic waves are unable to reach, head of the group, Dave Howe, is convinced.

Scientists managed to demonstrate their point of view in practice. With the help of sensors operating on the quantum properties of the rubidium atom (Rb), they changed magnetic fields of atoms for frequency modulation (roughly speaking, the waveform). In the course of the experiment, receivers detected weaker signals than earlier: with a power of 1 picotesla at a frequency below 1 kHz. Thus, quantum technology has proven its ability to detect magnetic signals more sensitively.

Scientists continue to work on the project. For greater efficiency, they are developing a quantum magnetometer – a signal receiver with a filter on atom energy level and its other properties. The team also intends to increase the throughput of the device to suppress noise and increase sensitivity.

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